balena-cli/build/actions/logs.js

(function() {
  var LOGS_HISTORY_COUNT, _, resin;

  _ = require('lodash');

  resin = require('resin-sdk');

  LOGS_HISTORY_COUNT = 200;

  module.exports = {
    signature: 'logs <uuid>',
    description: 'show device logs',
    help: 'Use this command to show logs for a specific device.\n\nBy default, the command prints all log messages and exit.\n\nTo limit the output to the n last lines, use the `--num` option along with a number.\nThis is similar to doing `resin logs <uuid> | tail -n X`.\n\nTo continuously stream output, and see new logs in real time, use the `--tail` option.\n\nNote that for now you need to provide the whole UUID for this command to work correctly.\n\nThis is due to some technical limitations that we plan to address soon.\n\nExamples:\n\n	$ resin logs 23c73a12e3527df55c60b9ce647640c1b7da1b32d71e6a39849ac0f00db828\n	$ resin logs 23c73a12e3527df55c60b9ce647640c1b7da1b32d71e6a39849ac0f00db828 --num 20\n	$ resin logs 23c73a12e3527df55c60b9ce647640c1b7da1b32d71e6a39849ac0f00db828 --tail',
    options: [
      {
        signature: 'num',
        parameter: 'num',
        description: 'number of lines to display',
        alias: 'n'
      }, {
        signature: 'tail',
        description: 'continuously stream output',
        boolean: true,
        alias: 't'
      }
    ],
    permission: 'user',
    action: function(params, options, done) {
      return resin.logs.subscribe(params.uuid, {
        history: options.num || LOGS_HISTORY_COUNT,
        tail: options.tail
      }, function(error, message) {
        if (error != null) {
          return done(error);
        }
        if (_.isArray(message)) {
          _.each(message, function(line) {
            return console.log(line.message);
          });
        } else {
          console.log(message.message);
        }
        return done();
      });
    }
  };

}).call(this);